Safety-razor



M. M. MCCAFFREY.

SAFETY RAZOR.

APPLICATION FILED AUG.30, 1920.

Patented June 21, 1921.

n W E UNITED STATES ATENT OFFICE.

MARY M. MGCAFFREY, F WASHINGTON,..DISTRICT 01F CQLUMBm ASSIG-NORUF -ONE- HALF T0 ISABEL LEES BAYLESS, 0F WAfiHINGTON, DISTRICT OF COLUMBIA.

SAFETY-RAZOR,

- Patented June 21, 1921.

Application file d August 30, 1920. Serial No. 406,947.

To all w/zom it may concern:

Be it known that I, MARY M. M CAFFREY, a citizen of the Unitedfitates, residing in the cityof *ashington, in the District of 5 Columbia, have invented certain new and ,useful Improvements in Safety-Razors, of which the following is a specification. f

This invention is an improvement in safety razors and more particularly to that class of the circular blade type. 7 To shave hair from the armpit or any depressed portion of the body with the ordi-' nary-- straight edge safety or. other razor --member showing circular depression.

is more or less unsatisfactory, therefore provide a safety razor which will effectively and safely'do such work, and to this end use is made of a circular blade so constructed that it may be flexed as desired;

Another'o'bject of my invention'is to provide a guard which serves not only to protect the skin from being cut but also to so depress the skin, that, in conjunction with the pressureplaced uponthe circular flexible blade, the cutting angle of the blade may be regulated to suit the nature of the depression to be shaved, which is accomplished by tightenin or slightly releasing the clamp-x b between head 2 and cap thy use of stem ing members of the razor. 3O

- provide a circular slotted blade capable of being flexed by means of'specially constructedclamping members. 7

Another object of the invention is; to pro vide a specially constructed guard to cover the slotted portion of the blade, and specially constructed teeth to protect the blade from cutting the skin, having a channel located behind said teeth. 40

vide a novel constructionof a safety razor and blade therefor, flexible at will, which is simple of construction, of few parts, is easily disconnected for cleaning and assembled for use, and which because of its circular form has a large V used to a greater advantage thanother simi lar safety razors. I v

'With these and other objects in view my invention consists in certain' ,.construction and combination of parts as will hereinafter be fully described and claimed in the specification and claims and illustrated inthe accompanying drawing which forms a part of this application, and in which like figures an object of the present invention is to' A further object of the invention is to on head 2 over which el .vided with a slot 6 to A further object of my invention is to pro-' on blade igby pressed circular ng edge, y eof reference refer to corresponding parts in all of the views; but it is understood that while I have described my invention as here'- with shown, that I do not confine myself to the exact design as shown, as slight changes may be made in the construction and combination of parts without departing from the spirit of the invention.

In the drawing: Figure-1 is a transverse vertical sectional view, except for portion of handle, of the assembled device.

llf g. 2 is a top plan view of the razor.

Big. 3 IS a plan view looking up at cap" F 4; is a plan view of the blade.

Fig, 5 is a plan view of-a modified form of blade. w Referring to the drawing the razor shown in Fig. 1 comprises a handle 1 with a! threaded orifice 19,:a blade su porting head 2, circularin form and rovidbd with teeth 14E constituting a guar a raised circular portion 16 and a blade positioning raised elliptical portion 17, a blade clamping circular cap 4 provided with a central threaded stem 5 and with circular depression 13, best shown in Fig. 3, a circular flexible blade 3 adapted to be clamped 5, and held firmly in place by blade positioning raised elliptical ortion 17 provided iptical hole 11 rovided through blade 3 snugly fits. B ade 3 is best illustrated in Fig. 4;, and is pro? permit greater flexing and also with elliptical openings 12 placed radially in blade 3 to prevent buckling when being made and to assist in allowing appropria'te-fiexing when pressure is placed means of screwing handle 1 on stem .5, which flexing, is produced by slightly raised. circular, portion 16 on head 2 (exaggeratedinidrawing) fitting into dey I h ortion 13 on cap 4 (also exaggeratedi)f e center of the raised cir- .100 cular fportion '16 on head 2 passes when in position over elliptical openings 12 slightly beyond the wide portion of said openings radially placed produciri thereby an even flexing of blade 3, and t us eliminating to a great extent the tendencyof circular blades to break on the outer edge thereof. Head 2 is further provided with a, special guard 15,

Fig. 2, integral therewith, to

V revent any possible cutting from the round ed edges of of the invention and clamping members it .The parts when separated are blade 3 formed by slot 6. .The raised elliptical portion 17 on head 2 is so placed thereon that'slot 6 is covered by special guard 15 when the razor is assembled for use. In Fig. 5 a modified form of blade 7 is shown, and if manufactured in this form the other parts may be conformed accordingly, and two special guards 15 would be necessary to prevent cuttin the skin.

As described above it wil be noted that the edge of circularblade 3 when assembled overlies a channel formed by specially constructed teeth 14. The depression 18 behind each guard tooth descends somewhat abruptly leaving an opening between guard 4 and ed e of blade 3 so that when the blade is tight y clamped'its edge is flexed toward channel 18 and permits an ordinary shave, whereas if cap- 4 is very slightly released by unscrewing stem 5 the flexing of blade 3 is not so great and a larger cutting edge is presented and a closer shave may be thus obtained.

In actual use when it is desired to ass'emble the four parts, head 2 is inverted and blade 3 placed thereon with slot 6 in special guard 15, then.

proper position over the stem 5 of cap 4 is inserted through hole in blade?) and head-2 after which handle 1 is screwed on tightly. In so adjusting the will be apparent that blade 3 will be partially flexed because slightly raisedcircular portion 16 provided on head 2 will be forced against blade 3 and bend it into the slightl depressed portion rovided on cap 4. It will also be observed that on account of the space provided by channel'18 the lather and hair removed in shaving is allowed to escape from channel 18 beneath blade 3 and ass out between teeth 14 and this is a'particularly desirable feature when removing hair for the first time or a heavy growth thereof.

It will be noted that either side of the blade may be used thereby obtaining more use than with permanently concaved blades.

all easily cleaned and there are no covered places to become unsanitary. i

It is understood the construction specially illustrated in the drawin and herein described represents merely t ie preferred form that modifications thereof may be made without departing from the rinciple or spirit of the invention.

aving thus described my invention, what I claim and desire to secure by Letters- Patent is:

1. A safety razor having in combination,

a handle, a flexible circular blade provided with a slot with parallel edges and a series of elliptical openings placed radially in said therewith to cover slot in blades, a circularhead provided with guard teeth and a special'guard portion integral blade and anelliptical raised portion integral with said head associated with said blade, a circular clamping cap piece, and means for holding said parts together as and for the purpose described. 4

2 14 safety razor having a handle with threaded orifice, a flexible slotted circular blade provided with slot with parallel edges and a series of elliptical openings placed radially in said blade, a circular head provided with guard teeth and special guard ortion integral therewith to cover slot in Blade, a slightl .curved circular raised portion, and an el iptical raised portion allintegral therewith, a circular clamping cap member provided with a slightly depressed circular portion and a threaded stem for screwing into threaded orifice provided with handle, substantially as described.

3. A safety razor comprising a handle provided with a threaded orifice, a flexible circular cutting blade provided with slot with parallel edges and a series of elliptical openings placed radially in said blade, a circular clamping head provided with ard teeth, a special guard portion over slotted portion of blade, a slightly raised circular portion, and an elliptical raised portion, all integral therewith, a circular clamping cap member provided with a slightly depressed circular portion and with a t readed stem both integral therewith, and means for clamping said arts together as and for the purpose descri 'ed.

4. A- safety razor comprising a handle provided with a threaded orifice, a circular blade provided with slot with parallel edges and a series of elliptical openings )laced radially in saidblade to prevent buc ling and permit flexing, a circular clamping head provided with guard teeth 'so constructed asto produce a channel located behind said guard teeth, a special guard iece to cover slotted portion of blade. a slightly raised circular portion and an elliptical raised portion to hold blade in osition, all integral with said head, a circu ar clamping member provided with a slightly depressed circular portion and a threaded stem integral therewith, and means for screwing said parts together and'fiexing said blade substantially as described.

In testimony whereof, I have signed my name in the presence of two witnesses.

MARY M. McCAFFREY.

Witnesses ALFRED DREssEn, D. H. SIBBETT. 

